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Finding the Fourth Proportional to 479,654.68, 719,484.20 and 124,643.56

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Solution

The fourth proportional to 479,654.68, 719,484.20 and 124,643.56 is: 186,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,654.68 : 719,484.20 = 124,643.56 : x
  2. Step 2: Convert to fraction form
    479,654.68/719,484.20 = 124,643.56/x
  3. Step 3: Cross multiply
    479,654.68x = 719,484.20 × 124,643.56
  4. Step 4: Simplify right side
    479,654.68x = 89,679,072,051.75
  5. Step 5: Solve for x
    x = 89,679,072,051.75/479,654.68
  6. Step 6: Final answer
    x = 186,965.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.